Interrupting device.



U. N. CAHUSAC. INTEBRUPTING DEVICE.

APPLICATION FILED MAY 19, 1913.

1,1 14,225. Patented 0ct.20,1914.

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F/ .6. l I 52 27(3 9 8 Wi/nesses: 5 //7ve/7/0/ C/arence a/wsqc. WW I UNITED STATES PATENT OFFICE.

CLARENCE N. CAI-IUSAC, OF NEW YORK, N. Y., ASSIGNOR T0 WESTERN ELECTRIC COM- PANY, OF NEW YORK, N. Y., A CORPORATION OF ILLINOIS.

INTERRUPTING DEVICE.

Specification of Letters Patent.

Patented Oct. 20, 1914.

Application filed May 19, 1913. Serial No. 768,638.

second street, in the city of New Yor county of New York, and State of New York, have invented a certain-new and useful Improvement in Interrupting Devices, of which the following is a full, clear, concise, and exact description.

ing devices, and more particularly to electromagnetic circuit interrupting devices for intermittently closing circuit springs at defi nite periods.

The object of this invention is to provide a device of this class comprising few and simple parts, by means of which an appreciable period of time may be obtained between circuit interruptions, and which will be ac curate and efficient in its operation.

A device made in accordance with this invention comprises generally a circuit con trolling device having an oscillating movement and operating circuit closing springs to alternately make and break a circuit through a controlling electromagnet and an auxiliary circuit which may be used for signaling purposes.

Features of the invention are the combination of the circuit closing springs with the oscillating member whereby the desired periodicity of contact closure is obtained, and other details of construction and combination of parts.

In the drawings, Figure 1 is a perspective view of an interrupting device embodying this invention; Fig. 2 is a view in side elevation of the d'evice; Fig. 3 is a plan view of the device, and Figs. 4, 5 and 6 are views illustrating the switch operating device in various positions.

Referring to the drawings, 5 designates the top member of a main frame of nonmagnetic material having the side members 6 and 7 provided with supportin extensions 8 and 9. Secured to the inner faces of the sides 6 and 7 of the main frame are magnetic pole pieces 10 and 11, and an auxiliary frame 12 of non-magnetic material carrying a magnet winding 13 for energizing said pole pieces. Secured to a shaft 15, which has pivotal engagement with the auxiliary frame 12 and the main frame, is a comparatively heavy disk 16 of non-magnetic material. Secured to this disk is an armature 17 adapted to be attracted by the pole pleces 10 and 11 when the magnet winding 13 is energized by current from a suitable I source. The attraction of the armature 17 moves the metal disk 16 against the tension of a cpil spring 20, one end of which 1 is attached to the shaft 15, the other being adjustably secured in a lug 21 carried upon I the inner face of the side member 7 of the 5 main frame.

This invention relates to circuit interrupt- E the shaft 15 which extends through the top 5 plate 5 of the main frame is a cam disk 26 :having a low surface 27, an intermediate 5 surface 28 and a high surface 29. Mounted Mounted upon a projecting portion 25 of upon a lug 30, carried by the main frame,

is a spring pile embracing two outer contact springs 32 and 33 and a central actuating spring 34. The central actuating spring has at its free end an antifriction roller 36 whlch engages the cam surfaces to open and close contact with the springs 32 and 33.

In the normal position of the parts the antifriction roller 36 rests in engagement with the low surface 27, in which position the spring 34 is making contact with the outer contact spring 32, and the spring 20 is in equilibrium. If the switch 40, shown in Fig. 4, be closed, there will be a circuit closed 1 through the magnet winding 13, including a battery 41, the contact springs 34 and 32 and the magnet winding 13. Current in this path will energize the magnet and cause the attraction of the armature 17, which will cause the disk 16 to turn in a counterclockwise direction, bringing the high surface 29 of the cam 26 under the antifriction roller 36, thus opening the contacts 32 and 34 and closing contact between springs 34 and 33, and completes a circuit through an electrical signal 45. The disk 16 being of comparatively heavy material, the momentum thereof after the circuit through the magnet coil is broken, will carry the cam through a considerable distance against the tension of the spring 20. At the end of. its movement in this direction, the disk will be returned by the action of the spring 20 thereon and will, due to the action of said spring and its own momentum, be swung into the position shown in Fig. 6, in which position the antifriction roller 36 of the spring 34 will be in engagement with the intermediate surface 28 of the cam and none of the contacts will be closed. The low surface 27 of the cam being comparatively short and the return movement of the disk 161 being fairly rapid, the antifriction roller 36 of the spring 34 will not be in engagement with the low surface 27 of the cam a sufficient length of time to close the energizing circuit of the magnet winding, but the inlermediatesurface 28 of the cam will be -moved into engagementlwith the antifriction roller 36. This movement will put t tension in the spring 20 in the opposite direction, which will move the cam in the direction it was first moved until the low surface 27 thereof comes under the antifriction roller 36, whereupon contact springs 32 and 34 will be again brought into engagement to complete an energizing circuit for the magnet winding 13 and repeat the operation just described.

A device built and operatingin the manner described can be made to produce circuit closures of low periodicity and will operate with the minimum battery consumption, due to the very short period of time that the circuit of the operating battery is closed. Furthermore, such a device is compact, rigid, can be operated in any position under any temperature conditions and has no delicately adjusted parts to require attention.

I claim:

1. A circuit interrupting device comprising in combination an electromagnet, a spring, an oscillating member under joint control of said, electromagnet and said spring, contact springs controlling the circuit of said electromagnet and an auxiliary circuit, and means operated by said oscillating member for closing contact between said springs only in one direction of movement of said oscillating member.

2. A circuit interrupting device comprising an oscillating member having an intermediate and two extreme positions, a pair of contact springs, and a circuit closing member for said springs actuated by saidoscillating member to make contact with one of saidsprings in the intermediate position of said oscillating member, with the other of said springs in one extreme position and moved to a neutral osition in the other extreme position of said oscillating member.

3. A circuit interrupting device comprising an oscillating member having an intermediate and two extreme positions, a pair of contact springs, an actuating spring therefor and an operating member for said actuating spring carried by said oscillating member, said operating member engaging sald' actuatin spring in the intermediate position of said oscillating member to close a circuit with one of said contact springs, in on of said extreme positions to close a circu1t with the other of said contact springs, and 1n the other of said extreme positions to maintain said actuating spring in a neutral position.

4. A circuit interrupting device comprising an oscillating member, a cam carried thereby having a low surface, an intermediate surface upon one side of said low surface, and a high surface'upon the opposite side of said lOW surface, a pair of contact springs and an actuating spring therefor operated successively by the low, the high and the intermediate surfaces of said cam, whereby said actuating spring is moved first into engagement with one of said contact springs, then into engagement with the other and finally into a neutral position with respect to said contact springs.

55. A circuit interrupting device comprising an electromagnet, a spring, an oscillating member having an intermediate and two extreme positions, said oscillating member being moved from its intermediate to one of its extreme positions by. said electromagnet and back through its intermediate to its other extreme position, and again into its intermediate position by said spring, and contact springs closed by said oscillating member only in its intermediate and first extreme positions. a

6. A circuit interrupting device comprising an electromagnet, a spring, an oscillating member moved initially by said electromagnet and subsequently by said spring, a cam carried by said oscillating member, said cam having a low, an intermediate and a high surface, contact springs, an actuating spring therefor engaged by said cam to close contact with one of said springs when said actuating spring rests on said lower surface, with the other of said springs when engaged by the high surface and maintained in a neutral position when engaged by said intermediate surface.

7. A circuit interrupting device comprising a main frame, an auxiliary frame supported therein, an electromagnet supported in said frames, an oscillatory disk, a shaft for said metal disk pivot-ally supported in said main and auxiliary'frames, an armature for said electromagnet secured to said disk, an actuating spring for said disk, contact springs, and an operating device for said contact springs carried by the shaft of said oscillating disk.

8. A circuit interrupting device comprising a main frame, an auxiliary frame supported in said main frame, a magnet winding supported in said auxiliary frame, pole pieces supported between said frame, a metal disk pivotally supported between said frames, an armature for the electromagnet secured to said disk, a spring cooperating with saidelectromagnet to o cillatessaid disk, contact springs and means cdntrolled in the oscillations of said disk for operating said contact springs.

9. A circuit interrupting device comprising in combination an electromagnet, a

spring, an oscillating member under joint control of said electromagnet and said spring, a cam movable with said oscillating member, an operating cirouit for said electromagnet, an auxiliary signaling circuit, contact springs associated with each of said circuits, and a contact closing device cooperatin with said cam,and said contacts rings to a ternately make and break the clrcuits of said electromagnet and said auxiliary signal in the movement of said oscillating member.

10. A circuit interrupting device comprising in combination an electromagnet, a

' ,mediate and a high sur spring, an oscillatin member under the joint control of said e ectromagnet and said spring, a cam movable with said oscillating member, said cam having a low, an intera'oe, an operating actuating spring will close the circuit of said electromagnet, when in engagement with the high surface, said spring will close the auxiliary circuit, and when in engagement with said intermediate surface Wlll. maintain both circuits open.

In witness whereof, I hereunto subscribe w my name this 15th day of Ma A. 1)., 1913.

' CLARENCE N. AHUSAC. -Witnesses: W. F. HOFFMAN, U. H. BROWN. 

